fwiw - I think the grips at
https://www.gunpartscorp.com/ad/985140.htm
are likely leftovers/culls from the 1970s mauser parabellum / interarms luger production
like the production example currently offered at
http://www.simpsonltd.com/product_in...84bb05051e0666
these grips have the angular V shape around the grip screws frame location
perhaps a member who owns one of these can check the design / material used for these MP lugers with the counter in slot and comment
thanks
Bill